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Treating unhelpful suspicious thoughts in teenagers

Treating Unhelpful Suspicious Thoughts in teenagers (TRUST): A school-based feasibility randomised controlled clinical trial for adolescents with elevated paranoia

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
ISRCTN
Registry ID
ISRCTN67596256
Enrollment
40
Registered
2026-03-19
Start date
2026-03-23
Completion date
Unknown
Last updated
2026-03-30

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Paranoia Mental and Behavioural Disorders

Interventions

This study is a multi-school, assessor-blind, parallel-group, feasibility randomised controlled trial (RCT) with a nested mixed-methods process evaluation. It will recruit n=40 participants. The trial

Sponsors

Pennine Care NHS Foundation Trust
Lead Sponsor

Eligibility

Sex/Gender
All
Age
16 Years to 18 Years

Inclusion criteria

Inclusion criteria: Selection of schools A school will be included if: 1. It is a mainstream school located in London, Greater Manchester, or the surrounding areas in the South and North of England. 2. They are able to provide a named link person for risk and safeguarding liaison within the school, and a room for therapy sessions Inclusion criteria: 1. Aged 16 to 18 years 2. Attends a school /college or sixth form/recruiting to TRUST. 3. Able to provide written informed consent. 4. Able to engage in psychological assessments and the intervention 5. At least moderately severe paranoid beliefs, scoring of 11+ on the R-GPTS Ideas of Persecution subscale, indicating at least moderately elevated paranoia (Freeman et al., 2019). 6. Young person would like support to reduce paranoid fears. Qualitative study: Adolescents participating in the trial will be invited to consent to a qualitative interview at the point of consenting to the trial itself. This increases the chances that we will have consent from those completing therapy as well as those who drop out.

Exclusion criteria

Exclusion criteria: 1. Primary alcohol/substance dependence issue at initial assessment (primary dependence to be treated elsewhere first and adolescents can be re-referred to participate). Issues will be initially probed using the AUDIT and the DAST and further assessed, if indicated, via assessment questioning. 2. Developmental learning disability or significant head injury, neurological disorder or epilepsy. This will be stated in the participant information sheet and the participant will be asked at first assessment whether they have been given a diagnosis and by whom. 3. Moderate to high levels of risk, assessed at initial interview (see below). 4. Current diagnosis of bipolar disorder, post-traumatic stress disorder (PTSD) or psychosis and/or current or previous receipt of antipsychotic medication for more than 2 days (which would suggest already having made a transition to a first episode of psychosis). This will be stated in the participant information sheet and the participant will be asked at first assessment whether they have been given a diagnosis and by whom. 5. Other significant conditions or factors that contraindicate the young person’s participation in the trial. These will be assessed by asking the adolescent at the screening assessment. Responses will be carefully recorded and reported in the CONSORT, to further operationalise them in a future trial.

Countries

England, United Kingdom

Contacts

Public ContactChris;Jessica Taylor;Kingston

;

chrisdjtaylor@nhs.net;jessica.kingston@rhul.ac.uk+44 0114 222 6533;+44 01784 414105

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Apr 4, 2026